<ARTICLE> 5
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               JUN-30-1998
<CASH>                                          27,179
<SECURITIES>                                    10,506
<RECEIVABLES>                                   15,202
<ALLOWANCES>                                     1,856
<INVENTORY>                                     12,882
<CURRENT-ASSETS>                                72,821
<PP&E>                                          27,558
<DEPRECIATION>                                  24,063
<TOTAL-ASSETS>                                  77,805
<CURRENT-LIABILITIES>                           17,063
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        59,960
<OTHER-SE>                                         667
<TOTAL-LIABILITY-AND-EQUITY>                    77,805
<SALES>                                         53,329<F1>
<TOTAL-REVENUES>                                53,329
<CGS>                                           33,151<F2>
<TOTAL-COSTS>                                   33,151
<OTHER-EXPENSES>                                24,797
<LOSS-PROVISION>                                    22
<INTEREST-EXPENSE>                                  10
<INCOME-PRETAX>                                (1,880)
<INCOME-TAX>                                     (658)
<INCOME-CONTINUING>                            (1,222)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   (1,222)
<EPS-PRIMARY>                                   (0.07)
<EPS-DILUTED>                                   (0.07)
<FN>
<F1>Includes revenues from licensing of software and support services.
<F2>Includes costs from licensing of software and support services.
</FN>